.sign{
  width: 100%;
  height: 100%;
}
#root{
  height: 100%;
}
.container {
  width: calc(100vw - 40px);
  height: calc(100vh - 40px);
  padding: 20px;
}

.canvas-body {
  width: 100%;
  height: 100vh;
  /* margin: 20px auto; */
}

#sign {
  background-color: #f3f5f7;
  border-radius: 4px;
  border: 1px dashed #0F6BFF;
}

#img {
  margin: 20px;
  border-radius: 4px;
  background-color: #f3f5f7;
  display: none;
}

#img.show {
  display: inline-block;
}

.btns {
  width: calc(80vw - 40px);
  text-align: right;
  margin: 0 auto;
}